[PATCH] drm/amdgpu: Enable translate_further to extend UTCL2 reach

[Felix Kuehling]

On 2022-08-04 12:01, Joseph Greathouse wrote:
> Enable translate_further on Arcturus and Aldebaran server chips
> in order to increase the UTCL2 reach from 8 GiB to 64 GiB,
> which is more in line with the amount of framebuffer DRAM in
> the devices.
>
> Signed-off-by: Joseph Greathouse <Joseph.Greathouse at amd.com>

Acked-by: Felix Kuehling <Felix.Kuehling at amd.com>


> ---
>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index 22761a3bb818..ab89d91975ab 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -1624,12 +1624,15 @@ static int gmc_v9_0_sw_init(void *handle)
>   			amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 47);
>   		else
>   			amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
> +		if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 2))
> +			adev->gmc.translate_further = adev->vm_manager.num_level > 1;
>   		break;
>   	case IP_VERSION(9, 4, 1):
>   		adev->num_vmhubs = 3;
>   
>   		/* Keep the vm size same with Vega20 */
>   		amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
> +		adev->gmc.translate_further = adev->vm_manager.num_level > 1;
>   		break;
>   	default:
>   		break;